Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Operating Activities:
Net Loss	$ (0.3)	$ (2.1)
Adjustments to Reconcile Net Loss to Net Cash Provided by Operating Activities:
Amortization of Intangible Assets Acquired	1.2	1.6
Equity in (Earnings) Loss of Equity Method Limited Liability Investments	(6.8)	4.3
Distribution of Accumulated Earnings of Equity Method Limited Liability Investments	5.1	5.4
Decrease (Increase) in Value of Fair Value Option Investments Reported in Investment Income	(1.1)	2.6
Amortization of Investment Securities and Depreciation of Investment Real Estate	4.8	4.3
Net Realized Gains on Sales of Investments	(10.5)	(6.8)
Net Impairment Losses Recognized in Earnings	5.0	9.3
Depreciation of Property and Equipment	3.2	4.0
Increase in Receivables	(22.2)	(10.1)
Increase in Deferred Policy Acquisition Costs	(7.9)	(2.9)
Increase in Insurance Reserves	66.6	54.6
Increase in Unearned Premiums	21.4	8.5
Change in Income Taxes	(2.3)	(4.6)
Increase (Decrease) in Accrued Expenses and Other Liabilities	(6.9)	5.1
Other, Net	(1.0)	4.0
Net Cash Provided by Operating Activities	48.3	77.2
Investing Activities:
Sales, Paydowns and Maturities of Fixed Maturities	89.7	142.0
Purchases of Fixed Maturities	(176.5)	(102.7)
Sales of Equity Securities	53.9	41.6
Purchases of Equity Securities	(59.5)	(19.0)
Return of Investment of Equity Method Limited Liability Investments	25.5	5.5
Acquisitions of Equity Method Limited Liability Investments	(5.3)	(15.0)
Sales of Fair Value Option Investments	22.0	0.0
Decrease (Increase) in Short-term Investments	29.3	(111.7)
Improvements of Investment Real Estate	(0.6)	(0.9)
Sales of Investment Real Estate	2.8	0.0
Increase in Other Investments	(0.8)	(1.0)
Acquisition and Development of Software	(10.0)	(1.3)
Other, Net	(3.2)	(0.5)
Net Cash Used by Investing Activities	(32.7)	(63.0)
Financing Activities:
Net Proceeds from Issuances of Debt	0.0	10.0
Repayments of Debt	0.0	(10.0)
Common Stock Repurchases	0.0	(3.8)
Dividends and Dividend Equivalents Paid	(12.3)	(12.2)
Cash Exercise of Stock Options	0.9	0.0
Other, Net	0.1	0.5
Net Cash Used by Financing Activities	(11.3)	(15.5)
Increase (Decrease) in Cash	4.3	(1.3)
Cash, Beginning of Year	115.7	161.7
Cash, End of Period	$ 120.0	$ 160.4